[source]
tar = "https://ftp.gnu.org/gnu/libiconv/libiconv-1.17.tar.gz"
blake3 = "820b3b9fd3e2181bfb95475f01e9a3451e6d751e4f8c98ebcdcca1d8aa720f7f"
patches = [
    "01_redox.patch"
]
script = """
DYNAMIC_INIT
cp ${COOKBOOK_HOST_SYSROOT}/share/aclocal/libtool.m4 ./m4/
cp ${COOKBOOK_HOST_SYSROOT}/share/aclocal/libtool.m4 ./libcharset/m4/
cp -fp ${COOKBOOK_HOST_SYSROOT}/share/libtool/build-aux/ltmain.sh ./build-aux/
cp -fp ${COOKBOOK_HOST_SYSROOT}/share/libtool/build-aux/ltmain.sh ./libcharset/build-aux/
cp ${COOKBOOK_HOST_SYSROOT}/share/aclocal/ltversion.m4 ./m4/
cp ${COOKBOOK_HOST_SYSROOT}/share/aclocal/ltversion.m4 ./libcharset/m4/

autotools_recursive_regenerate -I$(realpath ./m4) -I$(realpath ./srcm4)
"""

[build]
template = "custom"
script = """
DYNAMIC_STATIC_INIT
COOKBOOK_CONFIGURE_FLAGS+=(
    ac_cv_have_decl_program_invocation_name=no
    ac_cv_objext=o
    ac_cv_prog_cc_c_o=yes
    ac_cv_exeext=
    acl_cv_rpath=done
)

# Restore the pristine configure scripts on every build, then layer our Redox
# cross-build fixes on top. Host autoconf 2.72 regenerates an invalid top-level
# configure for this recipe in our environment, so we patch the shipped script
# instead of regenerating it.
python3 - <<'PYEOF'
import os
import tarfile
from pathlib import Path

source_dir = Path(os.environ["COOKBOOK_SOURCE"])
source_tar = Path(os.environ["COOKBOOK_RECIPE"]) / "source.tar"
with tarfile.open(source_tar) as tf:
    for relative in ("configure", "libcharset/configure"):
        member = next(m for m in tf.getmembers() if m.name.endswith("/" + relative))
        target = source_dir / relative
        target.write_text(tf.extractfile(member).read().decode("utf-8", errors="replace"))
PYEOF

# Upgrade bundled libtool glue in both the top-level tree and nested
# libcharset tree to the current host libtool (2.6.0) so generated libtool
# helpers match the host ltmain.sh version.
for subdir in "${COOKBOOK_SOURCE}" "${COOKBOOK_SOURCE}/libcharset"; do
    if [ -d "${subdir}" ]; then
        mkdir -p "${subdir}/m4" "${subdir}/build-aux"
        cp -f /usr/share/aclocal/libtool.m4 "${subdir}/m4/"
        cp -f /usr/share/aclocal/ltoptions.m4 "${subdir}/m4/"
        cp -f /usr/share/aclocal/ltsugar.m4 "${subdir}/m4/"
        cp -f /usr/share/aclocal/ltversion.m4 "${subdir}/m4/"
        cp -f /usr/share/aclocal/lt~obsolete.m4 "${subdir}/m4/"
        cp -f /usr/share/libtool/build-aux/ltmain.sh "${subdir}/build-aux/"
    fi
done

if [ -d "${COOKBOOK_SOURCE}/libcharset" ]; then
    (
        cd "${COOKBOOK_SOURCE}/libcharset"
        cp -f ../srcm4/relocatable.m4 m4/
        cp -f ../srcm4/codeset.m4 m4/
        cp -f ../srcm4/fcntl-o.m4 m4/
        cp -f ../srcm4/visibility.m4 m4/
    )
fi

# libcharset templates currently keep @HAVE_VISIBILITY@ unsubstituted on our
# Redox cross build. Patch the source templates before configure so every
# generated header gets a stable fallback value.
for template in \
    "${COOKBOOK_SOURCE}/libcharset/include/libcharset.h.build.in" \
    "${COOKBOOK_SOURCE}/libcharset/include/localcharset.h.build.in" \
    "${COOKBOOK_SOURCE}/include/iconv.h.build.in"
do
    if [ -f "${template}" ]; then
        sed -i 's/@HAVE_VISIBILITY@/0/g' "${template}"
    fi
done

export CPP="${GNU_TARGET}-gcc -E"

# Force cross mode in the shipped top-level configure and keep the rest of the
# generated shell structure intact.
sed -i '0,/cross_compiling=maybe/s//cross_compiling=yes/' "${COOKBOOK_SOURCE}/configure"
python3 - <<'PYEOF'
from pathlib import Path
import os
for relative in ('configure', 'libcharset/configure'):
    path = Path(os.environ['COOKBOOK_SOURCE']) / relative
    lines = path.read_text().splitlines()
    for i, line in enumerate(lines):
        if "macro_version='2.4.7'" in line or "macro_version='2.5.4-redox-9510'" in line:
            lines[i] = "macro_version='2.6.0'"
        if "macro_revision='2.4.7'" in line or "macro_revision='2.5.4-redox-9510'" in line:
            lines[i] = "macro_revision='2.6.0'"
        if "grep -v '^ *+' conftest.err >conftest.er1" in line:
            lines[i] = "test -f conftest.err && grep -v '^ *+' conftest.err > conftest.er1.tmp && mv -f conftest.er1.tmp conftest.er1 || :"
        if 'cat conftest.er1 >&5' in line:
            lines[i] = 'test -f conftest.er1 && cat conftest.er1 >&5 || :'
        if 'mv -f conftest.er1 conftest.err' in line:
            lines[i] = 'test -f conftest.er1 && mv -f conftest.er1 conftest.err || :'
        if line.strip() == 'rm -f conftest conftest$ac_cv_exeext':
            lines[i] = 'rm -rf conftest conftest$ac_cv_exeext'
    path.write_text("\\n".join(lines) + "\\n")
PYEOF

cookbook_configure

# libcharset's configure currently leaves @HAVE_VISIBILITY@ unsubstituted in
# generated headers on our Redox cross build. Normalize the generated headers
# so the compile path matches the already-published libiconv artifact.
for header in \
    include/libcharset.h \
    include/localcharset.h \
    libcharset/include/libcharset.h \
    libcharset/include/localcharset.h
do
    if [ -f "${header}" ]; then
        sed -i 's/@HAVE_VISIBILITY@/0/g' "${header}"
    fi
done

# Force the nested libcharset configure step now, then patch the generated
# headers in the build tree before the top-level make descends into libcharset.
if [ -d "libcharset" ]; then
    (
        cd libcharset
        "${COOKBOOK_SOURCE}/libcharset/configure" \
            --disable-option-checking \
            --prefix=/usr \
            --host="${GNU_TARGET}" \
            --enable-shared \
            --enable-static \
            ac_cv_have_decl_program_invocation_name=no \
            CC="${GNU_TARGET}-gcc" \
            LDFLAGS="${LDFLAGS}" \
            CPPFLAGS="${CPPFLAGS}" \
            --cache-file=/dev/null \
            --srcdir="${COOKBOOK_SOURCE}/libcharset"
    )
    for header in \
        libcharset/include/libcharset.h \
        libcharset/include/localcharset.h
    do
        if [ -f "${header}" ]; then
            sed -i 's/@HAVE_VISIBILITY@/0/g' "${header}"
        fi
    done
fi

"""